[{"citation":{"mla":"Farheen, Henna, et al. “Tailoring the Directive Nature of Optical Waveguide Antennas.” <i>Integrated Optics: Devices, Materials, and Technologies XXVII</i>, edited by Sonia M. García-Blanco and Pavel Cheben, SPIE, 2023, p. 124241E, doi:<a href=\"https://doi.org/10.1117/12.2658921\">10.1117/12.2658921</a>.","bibtex":"@inproceedings{Farheen_Yan_Leuteritz_Qiao_Spreyer_Schlickriede_Quiring_Eigner_Silberhorn_Zentgraf_et al._2023, title={Tailoring the directive nature of optical waveguide antennas}, DOI={<a href=\"https://doi.org/10.1117/12.2658921\">10.1117/12.2658921</a>}, booktitle={Integrated Optics: Devices, Materials, and Technologies XXVII}, publisher={SPIE}, author={Farheen, Henna and Yan, Lok-Yee and Leuteritz, Till and Qiao, Siqi and Spreyer, Florian and Schlickriede, Christian and Quiring, Viktor and Eigner, Christof and Silberhorn, Christine and Zentgraf, Thomas and et al.}, editor={García-Blanco, Sonia M. and Cheben, Pavel}, year={2023}, pages={124241E} }","ama":"Farheen H, Yan L-Y, Leuteritz T, et al. Tailoring the directive nature of optical waveguide antennas. In: García-Blanco SM, Cheben P, eds. <i>Integrated Optics: Devices, Materials, and Technologies XXVII</i>. SPIE; 2023:124241E. doi:<a href=\"https://doi.org/10.1117/12.2658921\">10.1117/12.2658921</a>","ieee":"H. Farheen <i>et al.</i>, “Tailoring the directive nature of optical waveguide antennas,” in <i>Integrated Optics: Devices, Materials, and Technologies XXVII</i>, 2023, p. 124241E, doi: <a href=\"https://doi.org/10.1117/12.2658921\">10.1117/12.2658921</a>.","apa":"Farheen, H., Yan, L.-Y., Leuteritz, T., Qiao, S., Spreyer, F., Schlickriede, C., Quiring, V., Eigner, C., Silberhorn, C., Zentgraf, T., Linden, S., Myroshnychenko, V., &#38; Förstner, J. (2023). Tailoring the directive nature of optical waveguide antennas. In S. M. García-Blanco &#38; P. Cheben (Eds.), <i>Integrated Optics: Devices, Materials, and Technologies XXVII</i> (p. 124241E). SPIE. <a href=\"https://doi.org/10.1117/12.2658921\">https://doi.org/10.1117/12.2658921</a>","short":"H. Farheen, L.-Y. Yan, T. Leuteritz, S. Qiao, F. Spreyer, C. Schlickriede, V. Quiring, C. Eigner, C. Silberhorn, T. Zentgraf, S. Linden, V. Myroshnychenko, J. Förstner, in: S.M. García-Blanco, P. Cheben (Eds.), Integrated Optics: Devices, Materials, and Technologies XXVII, SPIE, 2023, p. 124241E.","chicago":"Farheen, Henna, Lok-Yee Yan, Till Leuteritz, Siqi Qiao, Florian Spreyer, Christian Schlickriede, Viktor Quiring, et al. “Tailoring the Directive Nature of Optical Waveguide Antennas.” In <i>Integrated Optics: Devices, Materials, and Technologies XXVII</i>, edited by Sonia M. García-Blanco and Pavel Cheben, 124241E. SPIE, 2023. <a href=\"https://doi.org/10.1117/12.2658921\">https://doi.org/10.1117/12.2658921</a>."},"file_date_updated":"2023-03-22T09:25:57Z","project":[{"name":"TRR 142: TRR 142 - Maßgeschneiderte nichtlineare Photonik: Von grundlegenden Konzepten zu funktionellen Strukturen","_id":"53","grant_number":"231447078"},{"name":"TRR 142 - A08: TRR 142 - Nichtlineare Kopplung von Zwischenschicht-Exzitonen in van der Waals-Heterostrukturen an plasmonische und dielektrische Nanokavitäten (A08)","grant_number":"231447078","_id":"65"}],"status":"public","has_accepted_license":"1","publisher":"SPIE","_id":"43051","page":"124241E","editor":[{"first_name":"Sonia M.","last_name":"García-Blanco","full_name":"García-Blanco, Sonia M."},{"first_name":"Pavel","last_name":"Cheben","full_name":"Cheben, Pavel"}],"ddc":["530"],"user_id":"30525","publication":"Integrated Optics: Devices, Materials, and Technologies XXVII","abstract":[{"lang":"eng","text":"We demonstrate the numerical and experimental realization of optimized optical traveling-wave antennas made of low-loss dielectric materials. These antennas exhibit highly directive radiation patterns and our studies reveal that this nature comes from two dominant guided TE modes excited in the waveguide-like director of the antenna, in addition to the leaky modes. The optimized antennas possess a broadband nature and have a nearunity radiation efficiency at an operational wavelength of 780 nm. Compared to the previously studied plasmonic antennas for photon emission, our all-dielectric approach demonstrates a new class of highly directional, low-loss, and broadband optical antennas."}],"date_created":"2023-03-21T12:28:31Z","file":[{"relation":"main_file","date_updated":"2023-03-22T09:25:57Z","file_name":"2023-01 Poster Photonics West Henna OWA_A0.pdf","file_size":1426599,"access_level":"local","file_id":"43062","content_type":"application/pdf","creator":"fossie","date_created":"2023-03-22T09:25:57Z"}],"department":[{"_id":"61"},{"_id":"230"},{"_id":"429"},{"_id":"623"}],"type":"conference","keyword":["tet_topic_opticalantenna"],"author":[{"last_name":"Farheen","orcid":"0000-0001-7730-3489","first_name":"Henna","full_name":"Farheen, Henna","id":"53444"},{"full_name":"Yan, Lok-Yee","first_name":"Lok-Yee","last_name":"Yan"},{"full_name":"Leuteritz, Till","first_name":"Till","last_name":"Leuteritz"},{"full_name":"Qiao, Siqi","first_name":"Siqi","last_name":"Qiao"},{"first_name":"Florian","last_name":"Spreyer","full_name":"Spreyer, Florian"},{"full_name":"Schlickriede, Christian","first_name":"Christian","last_name":"Schlickriede"},{"first_name":"Viktor","last_name":"Quiring","full_name":"Quiring, Viktor"},{"full_name":"Eigner, Christof","first_name":"Christof","last_name":"Eigner"},{"last_name":"Silberhorn","first_name":"Christine","full_name":"Silberhorn, Christine","id":"26263"},{"full_name":"Zentgraf, Thomas","orcid":"0000-0002-8662-1101","first_name":"Thomas","last_name":"Zentgraf","id":"30525"},{"full_name":"Linden, Stefan","last_name":"Linden","first_name":"Stefan"},{"id":"46371","last_name":"Myroshnychenko","first_name":"Viktor","full_name":"Myroshnychenko, Viktor"},{"full_name":"Förstner, Jens","orcid":"0000-0001-7059-9862","first_name":"Jens","last_name":"Förstner","id":"158"}],"year":"2023","title":"Tailoring the directive nature of optical waveguide antennas","date_updated":"2025-05-23T05:57:14Z","publication_status":"published","language":[{"iso":"eng"}],"doi":"10.1117/12.2658921"},{"department":[{"_id":"15"},{"_id":"230"},{"_id":"289"}],"type":"journal_article","date_created":"2021-10-07T07:39:27Z","abstract":[{"lang":"eng","text":"The nonlinear process of second harmonic generation (SHG) in monolayer (1L) transition metal dichalcogenides (TMD), like WS2, strongly depends on the polarization state of the excitation light. By combination of plasmonic nanostructures with 1L-WS2 by transferring it onto a plasmonic nanoantenna array, a hybrid metasurface is realized impacting the polarization dependency of its SHG. Here, we investigate how plasmonic dipole resonances affect the process of SHG in plasmonic–TMD hybrid metasurfaces by nonlinear spectroscopy. We show that the polarization dependency is affected by the lattice structure of plasmonic nanoantenna arrays as well as by the relative orientation between the 1L-WS2 and the individual plasmonic nanoantennas. In addition, such hybrid metasurfaces show SHG in polarization states, where SHG is usually forbidden for either 1L-WS2 or plasmonic nanoantennas. By comparing the SHG in these channels with the SHG generated by the hybrid metasurface components, we detect an enhancement of the SHG signal by a factor of more than 40. Meanwhile, an attenuation of the SHG signal in usually allowed polarization states is observed. Our study provides valuable insight into hybrid systems where symmetries strongly affect the SHG and enable tailored SHG in 1L-WS2 for future applications."}],"issue":"10","publication":"ACS Nano","doi":"10.1021/acsnano.1c06693","language":[{"iso":"eng"}],"main_file_link":[{"url":"https://pubs.acs.org/doi/10.1021/acsnano.1c06693","open_access":"1"}],"intvolume":"        15","article_type":"original","date_updated":"2022-01-06T06:57:07Z","publication_status":"published","author":[{"first_name":"Florian","last_name":"Spreyer","full_name":"Spreyer, Florian"},{"full_name":"Ruppert, Claudia","first_name":"Claudia","last_name":"Ruppert"},{"full_name":"Georgi, Philip","first_name":"Philip","last_name":"Georgi"},{"id":"30525","orcid":"0000-0002-8662-1101","first_name":"Thomas","last_name":"Zentgraf","full_name":"Zentgraf, Thomas"}],"publication_identifier":{"issn":["1936-0851","1936-086X"]},"title":"Influence of Plasmon Resonances and Symmetry Effects on Second Harmonic Generation in WS2–Plasmonic Hybrid Metasurfaces","year":"2021","oa":"1","project":[{"_id":"53","name":"TRR 142"},{"_id":"54","name":"TRR 142 - Project Area A"},{"name":"TRR 142 - Subproject A7","_id":"64"},{"name":"TRR 142 - Subproject A8","_id":"65"}],"quality_controlled":"1","citation":{"mla":"Spreyer, Florian, et al. “Influence of Plasmon Resonances and Symmetry Effects on Second Harmonic Generation in WS2–Plasmonic Hybrid Metasurfaces.” <i>ACS Nano</i>, vol. 15, no. 10, 2021, pp. 16719–28, doi:<a href=\"https://doi.org/10.1021/acsnano.1c06693\">10.1021/acsnano.1c06693</a>.","bibtex":"@article{Spreyer_Ruppert_Georgi_Zentgraf_2021, title={Influence of Plasmon Resonances and Symmetry Effects on Second Harmonic Generation in WS2–Plasmonic Hybrid Metasurfaces}, volume={15}, DOI={<a href=\"https://doi.org/10.1021/acsnano.1c06693\">10.1021/acsnano.1c06693</a>}, number={10}, journal={ACS Nano}, author={Spreyer, Florian and Ruppert, Claudia and Georgi, Philip and Zentgraf, Thomas}, year={2021}, pages={16719–16728} }","ama":"Spreyer F, Ruppert C, Georgi P, Zentgraf T. Influence of Plasmon Resonances and Symmetry Effects on Second Harmonic Generation in WS2–Plasmonic Hybrid Metasurfaces. <i>ACS Nano</i>. 2021;15(10):16719-16728. doi:<a href=\"https://doi.org/10.1021/acsnano.1c06693\">10.1021/acsnano.1c06693</a>","ieee":"F. Spreyer, C. Ruppert, P. Georgi, and T. Zentgraf, “Influence of Plasmon Resonances and Symmetry Effects on Second Harmonic Generation in WS2–Plasmonic Hybrid Metasurfaces,” <i>ACS Nano</i>, vol. 15, no. 10, pp. 16719–16728, 2021, doi: <a href=\"https://doi.org/10.1021/acsnano.1c06693\">10.1021/acsnano.1c06693</a>.","apa":"Spreyer, F., Ruppert, C., Georgi, P., &#38; Zentgraf, T. (2021). Influence of Plasmon Resonances and Symmetry Effects on Second Harmonic Generation in WS2–Plasmonic Hybrid Metasurfaces. <i>ACS Nano</i>, <i>15</i>(10), 16719–16728. <a href=\"https://doi.org/10.1021/acsnano.1c06693\">https://doi.org/10.1021/acsnano.1c06693</a>","chicago":"Spreyer, Florian, Claudia Ruppert, Philip Georgi, and Thomas Zentgraf. “Influence of Plasmon Resonances and Symmetry Effects on Second Harmonic Generation in WS2–Plasmonic Hybrid Metasurfaces.” <i>ACS Nano</i> 15, no. 10 (2021): 16719–28. <a href=\"https://doi.org/10.1021/acsnano.1c06693\">https://doi.org/10.1021/acsnano.1c06693</a>.","short":"F. Spreyer, C. Ruppert, P. Georgi, T. Zentgraf, ACS Nano 15 (2021) 16719–16728."},"volume":15,"user_id":"30525","funded_apc":"1","_id":"25605","page":"16719-16728","status":"public"},{"oa":"1","citation":{"short":"J. Mundry, F. Spreyer, V. Jmerik, S. Ivanov, T. Zentgraf, M. Betz, Optical Materials Express 11 (2021).","chicago":"Mundry, Jan, Florian Spreyer, Valentin Jmerik, Sergey Ivanov, Thomas Zentgraf, and Markus Betz. “Nonlinear Metasurface Combining Telecom-Range Intersubband Transitions in GaN/AlN Quantum Wells with Resonant Plasmonic Antenna Arrays.” <i>Optical Materials Express</i> 11, no. 7 (2021). <a href=\"https://doi.org/10.1364/ome.426236\">https://doi.org/10.1364/ome.426236</a>.","ieee":"J. Mundry, F. Spreyer, V. Jmerik, S. Ivanov, T. Zentgraf, and M. Betz, “Nonlinear metasurface combining telecom-range intersubband transitions in GaN/AlN quantum wells with resonant plasmonic antenna arrays,” <i>Optical Materials Express</i>, vol. 11, no. 7, 2021.","apa":"Mundry, J., Spreyer, F., Jmerik, V., Ivanov, S., Zentgraf, T., &#38; Betz, M. (2021). Nonlinear metasurface combining telecom-range intersubband transitions in GaN/AlN quantum wells with resonant plasmonic antenna arrays. <i>Optical Materials Express</i>, <i>11</i>(7). <a href=\"https://doi.org/10.1364/ome.426236\">https://doi.org/10.1364/ome.426236</a>","bibtex":"@article{Mundry_Spreyer_Jmerik_Ivanov_Zentgraf_Betz_2021, title={Nonlinear metasurface combining telecom-range intersubband transitions in GaN/AlN quantum wells with resonant plasmonic antenna arrays}, volume={11}, DOI={<a href=\"https://doi.org/10.1364/ome.426236\">10.1364/ome.426236</a>}, number={72134}, journal={Optical Materials Express}, publisher={OSA}, author={Mundry, Jan and Spreyer, Florian and Jmerik, Valentin and Ivanov, Sergey and Zentgraf, Thomas and Betz, Markus}, year={2021} }","ama":"Mundry J, Spreyer F, Jmerik V, Ivanov S, Zentgraf T, Betz M. Nonlinear metasurface combining telecom-range intersubband transitions in GaN/AlN quantum wells with resonant plasmonic antenna arrays. <i>Optical Materials Express</i>. 2021;11(7). doi:<a href=\"https://doi.org/10.1364/ome.426236\">10.1364/ome.426236</a>","mla":"Mundry, Jan, et al. “Nonlinear Metasurface Combining Telecom-Range Intersubband Transitions in GaN/AlN Quantum Wells with Resonant Plasmonic Antenna Arrays.” <i>Optical Materials Express</i>, vol. 11, no. 7, 2134, OSA, 2021, doi:<a href=\"https://doi.org/10.1364/ome.426236\">10.1364/ome.426236</a>."},"project":[{"_id":"53","name":"TRR 142"},{"name":"TRR 142 - Project Area A","_id":"54"},{"_id":"65","name":"TRR 142 - Subproject A8"}],"quality_controlled":"1","_id":"22450","publisher":"OSA","volume":11,"user_id":"30525","status":"public","date_created":"2021-06-16T05:52:21Z","department":[{"_id":"15"},{"_id":"230"},{"_id":"289"},{"_id":"429"}],"type":"journal_article","publication":"Optical Materials Express","issue":"7","abstract":[{"text":"We realize and investigate a nonlinear metasurface taking advantage of intersubband transitions in ultranarrow GaN/AlN multi-quantum well heterostructures. Owing to huge band offsets, the structures offer resonant transitions in the telecom window around 1.55 µm. These heterostructures are functionalized with an array of plasmonic antennas featuring cross-polarized resonances at these near-infrared wavelengths and their second harmonic. This kind of nonlinear metasurface allows for substantial second-harmonic generation at normal incidence which is completely absent for an antenna array without the multi-quantum well structure underneath. While the second harmonic is originally radiated only into the plane of the quantum wells, a proper geometrical arrangement of the plasmonic elements permits the redirection of the second-harmonic light to free-space radiation, which is emitted perpendicular to the surface.","lang":"eng"}],"language":[{"iso":"eng"}],"article_number":"2134","main_file_link":[{"url":"https://www.osapublishing.org/ome/fulltext.cfm?uri=ome-11-7-2134&id=452008","open_access":"1"}],"doi":"10.1364/ome.426236","publication_identifier":{"issn":["2159-3930"]},"author":[{"last_name":"Mundry","first_name":"Jan","full_name":"Mundry, Jan"},{"full_name":"Spreyer, Florian","first_name":"Florian","last_name":"Spreyer"},{"full_name":"Jmerik, Valentin","last_name":"Jmerik","first_name":"Valentin"},{"last_name":"Ivanov","first_name":"Sergey","full_name":"Ivanov, Sergey"},{"id":"30525","full_name":"Zentgraf, Thomas","last_name":"Zentgraf","first_name":"Thomas","orcid":"0000-0002-8662-1101"},{"full_name":"Betz, Markus","last_name":"Betz","first_name":"Markus"}],"title":"Nonlinear metasurface combining telecom-range intersubband transitions in GaN/AlN quantum wells with resonant plasmonic antenna arrays","year":"2021","article_type":"original","intvolume":"        11","publication_status":"published","date_updated":"2022-01-06T06:55:33Z"},{"publication_status":"published","date_updated":"2022-01-20T07:33:16Z","intvolume":"        10","title":"A wavelength and polarization selective photon sieve for holographic applications","year":"2021","author":[{"full_name":"Frese, Daniel","last_name":"Frese","first_name":"Daniel"},{"full_name":"Sain, Basudeb","last_name":"Sain","first_name":"Basudeb"},{"full_name":"Zhou, Hongqiang","first_name":"Hongqiang","last_name":"Zhou"},{"full_name":"Wang, Yongtian","first_name":"Yongtian","last_name":"Wang"},{"last_name":"Huang","first_name":"Lingling","full_name":"Huang, Lingling"},{"id":"30525","full_name":"Zentgraf, Thomas","first_name":"Thomas","orcid":"0000-0002-8662-1101","last_name":"Zentgraf"}],"publication_identifier":{"issn":["2192-8614","2192-8606"]},"doi":"10.1515/nanoph-2021-0440","main_file_link":[{"open_access":"1","url":"https://www.degruyter.com/document/doi/10.1515/nanoph-2021-0440/html"}],"language":[{"iso":"eng"}],"abstract":[{"text":"Optical metasurfaces are perfect candidates for the phase and amplitude modulation of light, featuring an excellent basis for holographic applications. In this work, we present a dual amplitude holographic scheme based on the photon sieve principle, which is then combined with a phase hologram by utilizing the Pancharatnam–Berry phase. We demonstrate that two types of apertures, rectangular and square shapes in a gold film filled with silicon nanoantennas are sufficient to create two amplitude holograms at two different wavelengths in the visible, multiplexed with an additional phase-only hologram. The nanoantennas are tailored to adjust the spectral transmittance of the apertures, enabling the wavelength sensitivity. The phase-only hologram is implemented by utilizing the anisotropic rectangular structure. Interestingly, such three holograms have quantitative mathematical correlations with each other. Thus, the flexibility of polarization and wavelength channels can be utilized with custom-tailored features to achieve such amplitude and phase holography simultaneously without sacrificing any space-bandwidth product. The present scheme has the potential to store different pieces of information which can be displayed separately by switching the wavelength or the polarization state of the reading light beam.","lang":"eng"}],"issue":"18","publication":"Nanophotonics","type":"journal_article","department":[{"_id":"15"},{"_id":"230"},{"_id":"289"}],"date_created":"2021-10-28T07:15:52Z","status":"public","user_id":"30525","volume":10,"page":"4543-4550","_id":"26987","funded_apc":"1","publisher":"De Gruyter","quality_controlled":"1","project":[{"name":"TRR 142","_id":"53"},{"_id":"54","name":"TRR 142 - Project Area A"},{"name":"TRR 142 - Subproject A8","_id":"65"}],"citation":{"mla":"Frese, Daniel, et al. “A Wavelength and Polarization Selective Photon Sieve for Holographic Applications.” <i>Nanophotonics</i>, vol. 10, no. 18, De Gruyter, 2021, pp. 4543–50, doi:<a href=\"https://doi.org/10.1515/nanoph-2021-0440\">10.1515/nanoph-2021-0440</a>.","ama":"Frese D, Sain B, Zhou H, Wang Y, Huang L, Zentgraf T. A wavelength and polarization selective photon sieve for holographic applications. <i>Nanophotonics</i>. 2021;10(18):4543-4550. doi:<a href=\"https://doi.org/10.1515/nanoph-2021-0440\">10.1515/nanoph-2021-0440</a>","bibtex":"@article{Frese_Sain_Zhou_Wang_Huang_Zentgraf_2021, title={A wavelength and polarization selective photon sieve for holographic applications}, volume={10}, DOI={<a href=\"https://doi.org/10.1515/nanoph-2021-0440\">10.1515/nanoph-2021-0440</a>}, number={18}, journal={Nanophotonics}, publisher={De Gruyter}, author={Frese, Daniel and Sain, Basudeb and Zhou, Hongqiang and Wang, Yongtian and Huang, Lingling and Zentgraf, Thomas}, year={2021}, pages={4543–4550} }","apa":"Frese, D., Sain, B., Zhou, H., Wang, Y., Huang, L., &#38; Zentgraf, T. (2021). A wavelength and polarization selective photon sieve for holographic applications. <i>Nanophotonics</i>, <i>10</i>(18), 4543–4550. <a href=\"https://doi.org/10.1515/nanoph-2021-0440\">https://doi.org/10.1515/nanoph-2021-0440</a>","ieee":"D. Frese, B. Sain, H. Zhou, Y. Wang, L. Huang, and T. Zentgraf, “A wavelength and polarization selective photon sieve for holographic applications,” <i>Nanophotonics</i>, vol. 10, no. 18, pp. 4543–4550, 2021, doi: <a href=\"https://doi.org/10.1515/nanoph-2021-0440\">10.1515/nanoph-2021-0440</a>.","short":"D. Frese, B. Sain, H. Zhou, Y. Wang, L. Huang, T. Zentgraf, Nanophotonics 10 (2021) 4543–4550.","chicago":"Frese, Daniel, Basudeb Sain, Hongqiang Zhou, Yongtian Wang, Lingling Huang, and Thomas Zentgraf. “A Wavelength and Polarization Selective Photon Sieve for Holographic Applications.” <i>Nanophotonics</i> 10, no. 18 (2021): 4543–50. <a href=\"https://doi.org/10.1515/nanoph-2021-0440\">https://doi.org/10.1515/nanoph-2021-0440</a>."},"oa":"1"},{"main_file_link":[{"open_access":"1","url":"https://www.nature.com/articles/s41598-021-98569-6"}],"article_number":"19081","language":[{"iso":"eng"}],"doi":"10.1038/s41598-021-98569-6","title":"Extremely low-energy ARPES of quantum well states in cubic-GaN/AlN and GaAs/AlGaAs heterostructures","year":"2021","author":[{"first_name":"Mahdi","last_name":"Hajlaoui","full_name":"Hajlaoui, Mahdi"},{"first_name":"Stefano","last_name":"Ponzoni","full_name":"Ponzoni, Stefano"},{"full_name":"Deppe, Michael","last_name":"Deppe","first_name":"Michael"},{"last_name":"Henksmeier","first_name":"Tobias","full_name":"Henksmeier, Tobias"},{"full_name":"As, Donat Josef","last_name":"As","orcid":"0000-0003-1121-3565","first_name":"Donat Josef","id":"14"},{"id":"37763","full_name":"Reuter, Dirk","first_name":"Dirk","last_name":"Reuter"},{"id":"30525","full_name":"Zentgraf, Thomas","orcid":"0000-0002-8662-1101","first_name":"Thomas","last_name":"Zentgraf"},{"full_name":"Springholz, Gunther","first_name":"Gunther","last_name":"Springholz"},{"last_name":"Schneider","first_name":"Claus Michael","full_name":"Schneider, Claus Michael"},{"full_name":"Cramm, Stefan","first_name":"Stefan","last_name":"Cramm"},{"full_name":"Cinchetti, Mirko","first_name":"Mirko","last_name":"Cinchetti"}],"publication_identifier":{"issn":["2045-2322"]},"date_updated":"2023-10-09T09:15:12Z","publication_status":"published","intvolume":"        11","article_type":"original","date_created":"2021-10-01T07:29:15Z","type":"journal_article","department":[{"_id":"15"},{"_id":"230"},{"_id":"289"}],"publication":"Scientific Reports","abstract":[{"lang":"eng","text":"<jats:title>Abstract</jats:title><jats:p>Quantum well (QW) heterostructures have been extensively used for the realization of a wide range of optical and electronic devices. Exploiting their potential for further improvement and development requires a fundamental understanding of their electronic structure. So far, the most commonly used experimental techniques for this purpose have been all-optical spectroscopy methods that, however, are generally averaging in momentum space. Additional information can be gained by angle-resolved photoelectron spectroscopy (ARPES), which measures the electronic structure with momentum resolution. Here we report on the use of extremely low-energy ARPES (photon energy ~ 7 eV) to increase depth sensitivity and access buried QW states, located at 3 nm and 6 nm below the surface of cubic-GaN/AlN and GaAs/AlGaAs heterostructures, respectively. We find that the QW states in cubic-GaN/AlN can indeed be observed, but not their energy dispersion, because of the high surface roughness. The GaAs/AlGaAs QW states, on the other hand, are buried too deep to be detected by extremely low-energy ARPES. Since the sample surface is much flatter, the ARPES spectra of the GaAs/AlGaAs show distinct features in momentum space, which can be reconducted to the band structure of the topmost surface layer of the QW structure. Our results provide important information about the samples’ properties required to perform extremely low-energy ARPES experiments on electronic states buried in semiconductor heterostructures.</jats:p>"}],"_id":"25227","user_id":"14931","volume":11,"status":"public","oa":"1","citation":{"mla":"Hajlaoui, Mahdi, et al. “Extremely Low-Energy ARPES of Quantum Well States in Cubic-GaN/AlN and GaAs/AlGaAs Heterostructures.” <i>Scientific Reports</i>, vol. 11, 19081, 2021, doi:<a href=\"https://doi.org/10.1038/s41598-021-98569-6\">10.1038/s41598-021-98569-6</a>.","ama":"Hajlaoui M, Ponzoni S, Deppe M, et al. Extremely low-energy ARPES of quantum well states in cubic-GaN/AlN and GaAs/AlGaAs heterostructures. <i>Scientific Reports</i>. 2021;11. doi:<a href=\"https://doi.org/10.1038/s41598-021-98569-6\">10.1038/s41598-021-98569-6</a>","bibtex":"@article{Hajlaoui_Ponzoni_Deppe_Henksmeier_As_Reuter_Zentgraf_Springholz_Schneider_Cramm_et al._2021, title={Extremely low-energy ARPES of quantum well states in cubic-GaN/AlN and GaAs/AlGaAs heterostructures}, volume={11}, DOI={<a href=\"https://doi.org/10.1038/s41598-021-98569-6\">10.1038/s41598-021-98569-6</a>}, number={19081}, journal={Scientific Reports}, author={Hajlaoui, Mahdi and Ponzoni, Stefano and Deppe, Michael and Henksmeier, Tobias and As, Donat Josef and Reuter, Dirk and Zentgraf, Thomas and Springholz, Gunther and Schneider, Claus Michael and Cramm, Stefan and et al.}, year={2021} }","apa":"Hajlaoui, M., Ponzoni, S., Deppe, M., Henksmeier, T., As, D. J., Reuter, D., Zentgraf, T., Springholz, G., Schneider, C. M., Cramm, S., &#38; Cinchetti, M. (2021). Extremely low-energy ARPES of quantum well states in cubic-GaN/AlN and GaAs/AlGaAs heterostructures. <i>Scientific Reports</i>, <i>11</i>, Article 19081. <a href=\"https://doi.org/10.1038/s41598-021-98569-6\">https://doi.org/10.1038/s41598-021-98569-6</a>","ieee":"M. Hajlaoui <i>et al.</i>, “Extremely low-energy ARPES of quantum well states in cubic-GaN/AlN and GaAs/AlGaAs heterostructures,” <i>Scientific Reports</i>, vol. 11, Art. no. 19081, 2021, doi: <a href=\"https://doi.org/10.1038/s41598-021-98569-6\">10.1038/s41598-021-98569-6</a>.","chicago":"Hajlaoui, Mahdi, Stefano Ponzoni, Michael Deppe, Tobias Henksmeier, Donat Josef As, Dirk Reuter, Thomas Zentgraf, et al. “Extremely Low-Energy ARPES of Quantum Well States in Cubic-GaN/AlN and GaAs/AlGaAs Heterostructures.” <i>Scientific Reports</i> 11 (2021). <a href=\"https://doi.org/10.1038/s41598-021-98569-6\">https://doi.org/10.1038/s41598-021-98569-6</a>.","short":"M. Hajlaoui, S. Ponzoni, M. Deppe, T. Henksmeier, D.J. As, D. Reuter, T. Zentgraf, G. Springholz, C.M. Schneider, S. Cramm, M. Cinchetti, Scientific Reports 11 (2021)."},"quality_controlled":"1","project":[{"name":"TRR 142","_id":"53","grant_number":"231447078"},{"_id":"54","name":"TRR 142 - Project Area A"},{"grant_number":"231447078","_id":"65","name":"TRR 142 - Subproject A8"},{"_id":"55","name":"TRR 142 - Project Area B"},{"_id":"67","name":"TRR 142 - Subproject B2"},{"_id":"63","grant_number":"231447078","name":"TRR 142 - Subproject A6"}]},{"main_file_link":[{"open_access":"1"}],"language":[{"iso":"eng"}],"doi":"10.1021/acsphotonics.1c00028","title":"Nonlinear Bicolor Holography Using Plasmonic Metasurfaces","year":"2021","author":[{"last_name":"Frese","first_name":"Daniel","full_name":"Frese, Daniel"},{"full_name":"Wei, Qunshuo","last_name":"Wei","first_name":"Qunshuo"},{"full_name":"Wang, Yongtian","last_name":"Wang","first_name":"Yongtian"},{"full_name":"Cinchetti, Mirko","last_name":"Cinchetti","first_name":"Mirko"},{"full_name":"Huang, Lingling","first_name":"Lingling","last_name":"Huang"},{"id":"30525","last_name":"Zentgraf","orcid":"0000-0002-8662-1101","first_name":"Thomas","full_name":"Zentgraf, Thomas"}],"publication_identifier":{"issn":["2330-4022","2330-4022"]},"date_updated":"2025-01-08T11:40:50Z","publication_status":"published","intvolume":"         8","article_type":"letter_note","date_created":"2021-03-12T11:01:53Z","type":"journal_article","department":[{"_id":"15"},{"_id":"230"},{"_id":"289"}],"issue":"4","publication":"ACS Photonics","page":"1013-1019","_id":"21475","funded_apc":"1","user_id":"30525","volume":8,"status":"public","oa":"1","citation":{"mla":"Frese, Daniel, et al. “Nonlinear Bicolor Holography Using Plasmonic Metasurfaces.” <i>ACS Photonics</i>, vol. 8, no. 4, 2021, pp. 1013–19, doi:<a href=\"https://doi.org/10.1021/acsphotonics.1c00028\">10.1021/acsphotonics.1c00028</a>.","ama":"Frese D, Wei Q, Wang Y, Cinchetti M, Huang L, Zentgraf T. Nonlinear Bicolor Holography Using Plasmonic Metasurfaces. <i>ACS Photonics</i>. 2021;8(4):1013-1019. doi:<a href=\"https://doi.org/10.1021/acsphotonics.1c00028\">10.1021/acsphotonics.1c00028</a>","bibtex":"@article{Frese_Wei_Wang_Cinchetti_Huang_Zentgraf_2021, title={Nonlinear Bicolor Holography Using Plasmonic Metasurfaces}, volume={8}, DOI={<a href=\"https://doi.org/10.1021/acsphotonics.1c00028\">10.1021/acsphotonics.1c00028</a>}, number={4}, journal={ACS Photonics}, author={Frese, Daniel and Wei, Qunshuo and Wang, Yongtian and Cinchetti, Mirko and Huang, Lingling and Zentgraf, Thomas}, year={2021}, pages={1013–1019} }","apa":"Frese, D., Wei, Q., Wang, Y., Cinchetti, M., Huang, L., &#38; Zentgraf, T. (2021). Nonlinear Bicolor Holography Using Plasmonic Metasurfaces. <i>ACS Photonics</i>, <i>8</i>(4), 1013–1019. <a href=\"https://doi.org/10.1021/acsphotonics.1c00028\">https://doi.org/10.1021/acsphotonics.1c00028</a>","ieee":"D. Frese, Q. Wei, Y. Wang, M. Cinchetti, L. Huang, and T. Zentgraf, “Nonlinear Bicolor Holography Using Plasmonic Metasurfaces,” <i>ACS Photonics</i>, vol. 8, no. 4, pp. 1013–1019, 2021, doi: <a href=\"https://doi.org/10.1021/acsphotonics.1c00028\">10.1021/acsphotonics.1c00028</a>.","chicago":"Frese, Daniel, Qunshuo Wei, Yongtian Wang, Mirko Cinchetti, Lingling Huang, and Thomas Zentgraf. “Nonlinear Bicolor Holography Using Plasmonic Metasurfaces.” <i>ACS Photonics</i> 8, no. 4 (2021): 1013–19. <a href=\"https://doi.org/10.1021/acsphotonics.1c00028\">https://doi.org/10.1021/acsphotonics.1c00028</a>.","short":"D. Frese, Q. Wei, Y. Wang, M. Cinchetti, L. Huang, T. Zentgraf, ACS Photonics 8 (2021) 1013–1019."},"quality_controlled":"1","project":[{"name":"TRR 142 - Project Area A","_id":"54"},{"grant_number":"231447078","_id":"65","name":"TRR 142 - Subproject A8"},{"name":"TRR 142: TRR 142 - Maßgeschneiderte nichtlineare Photonik: Von grundlegenden Konzepten zu funktionellen Strukturen","grant_number":"231447078","_id":"53"}]},{"publication":"Nano Letters","issue":"6","abstract":[{"text":"As flexible optical devices that can manipulate the phase and amplitude of light, metasurfaces would clearly benefit from directional optical properties. However, single layer metasurface systems consisting of two-dimensional nanoparticle arrays exhibit only a weak spatial asymmetry perpendicular to the surface and therefore have mostly symmetric transmission features. Here, we present a metasurface design principle for nonreciprocal polarization encryption of holographic images. Our approach is based on a two-layer plasmonic metasurface design that introduces a local asymmetry and generates a bidirectional functionality with full phase and amplitude control of the transmitted light. The encoded hologram is designed to appear in a particular linear cross-polarization channel, while it is disappearing in the reverse propagation direction. Hence, layered metasurface systems can feature asymmetric transmission with full phase and amplitude control and therefore expand the design freedom in nanoscale optical devices toward asymmetric information processing and security features for anticounterfeiting applications.","lang":"eng"}],"date_created":"2019-07-15T07:55:26Z","department":[{"_id":"15"},{"_id":"230"},{"_id":"289"},{"_id":"429"}],"type":"journal_article","publication_identifier":{"issn":["1530-6984","1530-6992"]},"author":[{"full_name":"Frese, Daniel","first_name":"Daniel","last_name":"Frese"},{"last_name":"Wei","first_name":"Qunshuo","full_name":"Wei, Qunshuo"},{"full_name":"Wang, Yongtian","last_name":"Wang","first_name":"Yongtian"},{"full_name":"Huang, Lingling","first_name":"Lingling","last_name":"Huang"},{"full_name":"Zentgraf, Thomas","last_name":"Zentgraf","orcid":"0000-0002-8662-1101","first_name":"Thomas","id":"30525"}],"title":"Nonreciprocal Asymmetric Polarization Encryption by Layered Plasmonic Metasurfaces","year":"2019","article_type":"original","intvolume":"        19","publication_status":"published","date_updated":"2022-01-06T06:51:13Z","language":[{"iso":"eng"}],"pmid":"1","doi":"10.1021/acs.nanolett.9b01298","citation":{"ieee":"D. Frese, Q. Wei, Y. Wang, L. Huang, and T. Zentgraf, “Nonreciprocal Asymmetric Polarization Encryption by Layered Plasmonic Metasurfaces,” <i>Nano Letters</i>, vol. 19, no. 6, pp. 3976–3980, 2019, doi: <a href=\"https://doi.org/10.1021/acs.nanolett.9b01298\">10.1021/acs.nanolett.9b01298</a>.","apa":"Frese, D., Wei, Q., Wang, Y., Huang, L., &#38; Zentgraf, T. (2019). Nonreciprocal Asymmetric Polarization Encryption by Layered Plasmonic Metasurfaces. <i>Nano Letters</i>, <i>19</i>(6), 3976–3980. <a href=\"https://doi.org/10.1021/acs.nanolett.9b01298\">https://doi.org/10.1021/acs.nanolett.9b01298</a>","short":"D. Frese, Q. Wei, Y. Wang, L. Huang, T. Zentgraf, Nano Letters 19 (2019) 3976–3980.","chicago":"Frese, Daniel, Qunshuo Wei, Yongtian Wang, Lingling Huang, and Thomas Zentgraf. “Nonreciprocal Asymmetric Polarization Encryption by Layered Plasmonic Metasurfaces.” <i>Nano Letters</i> 19, no. 6 (2019): 3976–80. <a href=\"https://doi.org/10.1021/acs.nanolett.9b01298\">https://doi.org/10.1021/acs.nanolett.9b01298</a>.","mla":"Frese, Daniel, et al. “Nonreciprocal Asymmetric Polarization Encryption by Layered Plasmonic Metasurfaces.” <i>Nano Letters</i>, vol. 19, no. 6, 2019, pp. 3976–80, doi:<a href=\"https://doi.org/10.1021/acs.nanolett.9b01298\">10.1021/acs.nanolett.9b01298</a>.","bibtex":"@article{Frese_Wei_Wang_Huang_Zentgraf_2019, title={Nonreciprocal Asymmetric Polarization Encryption by Layered Plasmonic Metasurfaces}, volume={19}, DOI={<a href=\"https://doi.org/10.1021/acs.nanolett.9b01298\">10.1021/acs.nanolett.9b01298</a>}, number={6}, journal={Nano Letters}, author={Frese, Daniel and Wei, Qunshuo and Wang, Yongtian and Huang, Lingling and Zentgraf, Thomas}, year={2019}, pages={3976–3980} }","ama":"Frese D, Wei Q, Wang Y, Huang L, Zentgraf T. Nonreciprocal Asymmetric Polarization Encryption by Layered Plasmonic Metasurfaces. <i>Nano Letters</i>. 2019;19(6):3976-3980. doi:<a href=\"https://doi.org/10.1021/acs.nanolett.9b01298\">10.1021/acs.nanolett.9b01298</a>"},"project":[{"_id":"54","name":"TRR 142 - Project Area A"},{"_id":"65","name":"TRR 142 - Subproject A8"},{"_id":"53","name":"TRR 142"}],"quality_controlled":"1","external_id":{"pmid":["31050899"]},"status":"public","funded_apc":"1","_id":"11953","page":"3976-3980","volume":19,"user_id":"30525"}]